Results 71 to 80 of about 33,296 (260)

Metrics of Astrometric Variability in the International Celestial Reference Frame. I. Statistical Analysis and Selection of the Most Variable Sources

The Astrophysical Journal Supplement Series
Using very long baseline interferometry data for the sources that comprise the third International Celestial Reference Frame (ICRF3), we examine the quality of the formal source-position uncertainties of ICRF3 by determining the excess astrometric ...
Phil Cigan, Valeri V. Makarov, Nathan J. Secrest, David Gordon, Megan C. Johnson, Sebastien Lambert   +5 more
doaj   +1 more source

Covalent Activation of the C‐type Lectin DC‐SIGN

Angewandte Chemie International Edition, Volume 65, Issue 3, 16 January 2026.
We introduce the first covalent activators of a C‐type lectin. Using orthogonal functional assays, NMR, MS/MS, and computational modeling, we delineate mechanisms from a functional electrophile‐first screen on dendritic cell‐specific intercellular adhesion molecule‐3‐grabbing non‐integrin (DC‐SIGN) that yields two modes: N‐hydroxysuccinimide (NHS ...
Jonathan Lefèbre, Maurice Besch, Noémi Csorba, Kristóf Garami, Zoltán Orgován, Gitta Schlosser, Iris Bermejo, Péter Ábrányi‐Balogh, György M. Keserű, Christoph Rademacher   +9 more
wiley   +1 more source

The Radio Fundamental Catalog. I. Astrometry

The Astrophysical Journal Supplement Series
We present an all-sky catalog of absolute positions and estimates of correlated flux density of 21,942 compact radio sources determined from processing interferometric visibility data of virtually all very long baseline interferometry (VLBI) observing ...
L. Y. Petrov, Y. Y. Kovalev
doaj   +1 more source

Visible Light Induced DLP‐Printed Oxygen‐Releasing TPMS Scaffolds Mitigate Early Hypoxia in Bone Defects

Advanced Healthcare Materials, Volume 15, Issue 3, 19 January 2026.
Visible light‐induced digital light processing 3D printed Primitive‐triply periodic minimal surface hydrogels embed CaO2–Si core–shell nanoparticles to deliver short‐term oxygen during the avascular window. The scaffolds maintain cytocompatibility, elevate osteopontin in vitro, and enhance calvarial defect repair in vivo without toxicity.
Anastasia B. Timoshenko, Ali Ghasemkhani, Chanul Kim, Domenic J. Cordova, Maria Astudillo Potes, Valeria Aceves, Indranath Mitra, Justin E. Bird, Ryan S. Gray, Stephanie K. Seidlits, Benjamin D. Elder, Maryam Tilton   +11 more
wiley   +1 more source

Very long baseline interferometry: accuracy limits and relativistic tests [PDF]

Proceedings of the International Astronomical Union, 2009
AbstractWe present a review on relativistic effects and best estimates of the relativistic PPN parameter γ obtained by analysis of data from the International VLBI Service for Geodesy and Astrometry (IVS). Relativistic implications are also considered in view of the upcoming new generation VLBI System: VLBI2010.
Heinkelmann, R., Schuh, H.
openaire   +4 more sources

Position determination of the Chang’e 3 lander with geodetic VLBI

Earth, Planets and Space, 2019
We present results from the analysis of observations of the Chang’e 3 lander using geodetic Very Long Baseline Interferometry. The applied processing strategy as well as the limiting factors to our approach is discussed.
Grzegorz Klopotek, Thomas Hobiger, Rüdiger Haas, Frédéric Jaron, Laura La Porta, Axel Nothnagel, Zhongkai Zhang, Songtao Han, Alexander Neidhardt, Christian Plötz   +9 more
doaj   +1 more source

Very long baseline interferometry [PDF]

S-band stations with dual tracking capability have been used to gather double differential very long baseline interferometry data on Apollo 16 and Apollo 17.
Salzberg, I. M.
core   +1 more source

Searching for coronal radio emission from protostars using Very-Long-Baseline Interferometry

, 2007
In order to directly study the role of magnetic fields in the immediate vicinity of protostars, we use Very-Long-Baseline Interferometry (VLBI), aiming at the detection of non-thermal centimetric radio emission.
A. Brunthaler, Allen, André, André, André, Bally, Beckwith, Bontemps, Calvet, Curiel, Dulk, E. Ros, Eiroa, Favata, Favata, Favata, Feigelson, Felli, Girart, Girart, Hamaguchi, J. Forbrich, K. M. Menten, Lay, Lay, Lim, Loinard, Looney, M. Massi, Massi, Massi, Montmerle, Moriarty-Schieven, Mundy, Phillips, Phillips, Preibisch, Rebull, Rodríguez, Rodríguez, Rodríguez, Rodríguez, Rodríguez, Schwab, Simon, Smith, Smith, Snell, Stapelfeldt, Tout, Tsuboi, Tsujimoto, Weigelt, Weintraub, Zinnecker   +54 more
core   +1 more source

Aptamer‐Engineered Ellipsometry for Clinical Detection of BALF‐Derived Exosomes: Multi‐Level Engineering for Prognostic Evaluation of Immunotherapy Responses

Advanced Science, Volume 13, Issue 3, 14 January 2026.
A novel ellipsometry platform functionalized with truncated PD‐L1 aptamers are developed to enable ultrasensitive detection of BALF‐derived exosomes. Through chemical ligand tailoring, mechanical sensing optimization, and tumor‐proximal fluid sampling, the system precisely stratifies ICI responders and non‐responders, offering superior sensitivity and ...
Euna Jeong, Jung Hyun Choi, Minyoung Lee, Jun Hyeok Lim, Seokho Jung, Yeeun Woo, Joo‐young Kim, Jaehyeon Ok, Lucia Kim, Woo‐jin Jeong, Won Chegal, Hyun Mo Cho, Chulhwan Park, Jiyoon Bu, Dong Hyung Kim, Taek Lee   +15 more
wiley   +1 more source

Multifrequency Analysis of Favored Models for the Messier 87* Accretion Flow

The Astrophysical Journal
The polarized images of the supermassive black hole Messier 87* (M87*) produced by the Event Horizon Telescope (EHT) provide a direct view of the near-horizon emission from a black hole accretion and jet system.
Daniel C. M. Palumbo, Michi Bauböck, Charles F. Gammie   +2 more
doaj   +1 more source